Hi all I know of at least four sailors including myself who have had the same problem with the shoulders on np suits its nothing to do with how you hang them its a defect in the material. my local store informed me that np considered a recall of the suits but decided against it. We have all had our suits replaced under warrantee np know they have a problem with the material.My warranteed suit is going the same way so that is to be replaced, after only six months ,so a warranteed warantee. It might be that if np don't sort the material out I will never need to buy a suit again.
I suggest that you get onto your supplier and if you are within the warrantee period ask that the suit should be replaced or repaired.I used to get two or three winters out of np suits,Yes the material is very soft and comfortable but should last longer that one season. We pay good money for suits we deserve better service . The only way to get that is to complain,don't let np fob us off all the best ken